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  Drivers behind the summer 2010 wave train leading to Russian heatwave and Pakistan flooding

Di Capua, G., Sparrow, S., Kornhuber, K., Rousi, E., Osprey, S., Wallom, D., van den Hurk, B., Coumou, D. (2021): Drivers behind the summer 2010 wave train leading to Russian heatwave and Pakistan flooding. - npj Climate and Atmospheric Science, 4, 55.
https://doi.org/10.1038/s41612-021-00211-9

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Di Capua, Giorgia1, Autor              
Sparrow, S.2, Autor
Kornhuber, Kai2, Autor
Rousi, Eftychia1, Autor              
Osprey, S.2, Autor
Wallom, D.2, Autor
van den Hurk, B.2, Autor
Coumou, Dim1, Autor              
Affiliations:
1Potsdam Institute for Climate Impact Research, ou_persistent13              
2External Organizations, ou_persistent22              

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 Zusammenfassung: Summer 2010 saw two simultaneous extremes linked by an atmospheric wave train: a record-breaking heatwave in Russia and severe floods in Pakistan. Here, we study this wave event using a large ensemble climate model experiment. First, we show that the circulation in 2010 reflected a recurrent wave train connecting the heatwave and flooding events. Second, we show that the occurrence of the wave train is favored by three drivers: (1) 2010 sea surface temperature anomalies increase the probability of this wave train by a factor 2-to-4 relative to the model’s climatology, (2) early-summer soil moisture deficit in Russia not only increases the probability of local heatwaves, but also enhances rainfall extremes over Pakistan by forcing an atmospheric wave response, and (3) high-latitude land warming favors wave-train occurrence and therefore rainfall and heat extremes. These findings highlight the complexity and synergistic interactions between different drivers, reconciling some seemingly contradictory results from previous studies.

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Sprache(n): eng - Englisch
 Datum: 2021-092021-11-042021-11-04
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: PIKDOMAIN: RD1 - Earth System Analysis
Organisational keyword: RD1 - Earth System Analysis
Working Group: Earth System Modes of Operation
Research topic keyword: Extremes
Research topic keyword: Atmosphere
Regional keyword: Global
MDB-ID: yes - 3285
OATYPE: Gold Open Access
DOI: 10.1038/s41612-021-00211-9
 Art des Abschluß: -

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Titel: npj Climate and Atmospheric Science
Genre der Quelle: Zeitschrift, SCI, Scopus, oa
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 4 Artikelnummer: 55 Start- / Endseite: - Identifikator: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/npj-climate-atmospheric-science
Publisher: Nature